BIND 10 #1228: V4 packet library - option processing

[BIND 10 Development]

#1228: V4 packet library - option processing
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                   Reporter:         |                 Owner:  tomek
  stephen                            |                Status:  accepted
                       Type:  task   |             Milestone:  Sprint-
                   Priority:  major  |  DHCP-20111026
                  Component:  dhcp   |            Resolution:
                   Keywords:         |             Sensitive:  0
            Defect Severity:  N/A    |           Sub-Project:  DHCP
Feature Depending on Ticket:         |  Estimated Difficulty:  0
        Add Hours to Ticket:  0      |           Total Hours:  0
                  Internal?:  0      |
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Comment (by tomek):

 Implemented generic support for DHCPv4 options (in libdhcp, options and
 Pkt4). Due to extensive changes, work on dedicated options was defined as
 a separate ticket (#1350).

 Note: DHCPv6 code uses share_array<uint8_t>. DHCPv4 code uses InputBuffer
 and OutputBuffer. This will be done during work on #1312. Currently some
 of the methods use strange conversions. That is a compromise and will be
 fixed in #1312. The alternative is to spend several days on refactoring
 DHCPv6 code - a luxury we can't afford at this time.

 Code is ready for review.

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Ticket URL: <http://bind10.isc.org/ticket/1228#comment:3>
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